omap 5912 serial driver

omap 5912 serial driver

[vikas gupta]

hi all



i am a naive user trying his hands on arm osk omap5912 board



Well i wanted to know whether it is possible to test serial port on omap
board by using inb/outb instruction as can be done in x86 platform...

If it is possible then can u please suggest me a working example of one test
case doing this thing..

I have tried my hands in it but wothout success on x86 platform below
mention program is working fine but on arm board it's not working so can
anyone help me ???



Sorry, if the question seems naive as this is my initial attempt :)



test program

=============



include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <sys/io.h>



#define base 0x378

#define value 255



main(int argc, char **argv)

{

  int value1;

  if (ioperm(base,1,1))

    fprintf(stderr, "Couldn't get the port at %x\n", base), exit(1);



   outb(value, base);

   value1 = inb(base);

  printf("value written is %d \n",value1);

}





vikas

Re: omap 5912 serial driver

[Tony Lindgren]

* vikas gupta <vikas.iet@gmail.com> [060113 06:50]:
> hi all
> 
> 
> 
> i am a naive user trying his hands on arm osk omap5912 board
> 
> 
> 
> Well i wanted to know whether it is possible to test serial port on omap
> board by using inb/outb instruction as can be done in x86 platform...
> 
> If it is possible then can u please suggest me a working example of one test
> case doing this thing..
> 
> I have tried my hands in it but wothout success on x86 platform below
> mention program is working fine but on arm board it's not working so can
> anyone help me ???
> 
> 
> 
> Sorry, if the question seems naive as this is my initial attempt :)
> 
> 
> 
> test program
> 
> =============
> 
> 
> 
> include <stdio.h>
> 
> #include <stdlib.h>
> 
> #include <unistd.h>
> 
> #include <sys/io.h>
> 
> 
> 
> #define base 0x378
> 
> #define value 255
> 
> 
> 
> main(int argc, char **argv)
> 
> {
> 
>   int value1;
> 
>   if (ioperm(base,1,1))
> 
>     fprintf(stderr, "Couldn't get the port at %x\n", base), exit(1);
> 
> 
> 
>    outb(value, base);
> 
>    value1 = inb(base);
> 
>   printf("value written is %d \n",value1);
> 
> }

It won't quite work as the IO address is different. Also inb/outb are
mapped to __raw_readb/__raw_writeb.

See these files:

include/asm-arm/io.h
include/asm-arm/arch-omap/io.h

Tony

Re: omap 5912 serial driver

[vikas gupta]

So can you suggest me how i can test my serial driver
i need to check the functionality of inb/outb
Can any one provide some pointer on it


On 1/14/06, Tony Lindgren <tony@atomide.com> wrote:
>
> * vikas gupta <vikas.iet@gmail.com> [060113 06:50]:
> > hi all
> >
> >
> >
> > i am a naive user trying his hands on arm osk omap5912 board
> >
> >
> >
> > Well i wanted to know whether it is possible to test serial port on omap
> > board by using inb/outb instruction as can be done in x86 platform...
> >
> > If it is possible then can u please suggest me a working example of one
> test
> > case doing this thing..
> >
> > I have tried my hands in it but wothout success on x86 platform below
> > mention program is working fine but on arm board it's not working so can
> > anyone help me ???
> >
> >
> >
> > Sorry, if the question seems naive as this is my initial attempt :)
> >
> >
> >
> > test program
> >
> > =============
> >
> >
> >
> > include <stdio.h>
> >
> > #include <stdlib.h>
> >
> > #include <unistd.h>
> >
> > #include <sys/io.h>
> >
> >
> >
> > #define base 0x378
> >
> > #define value 255
> >
> >
> >
> > main(int argc, char **argv)
> >
> > {
> >
> >   int value1;
> >
> >   if (ioperm(base,1,1))
> >
> >     fprintf(stderr, "Couldn't get the port at %x\n", base), exit(1);
> >
> >
> >
> >    outb(value, base);
> >
> >    value1 = inb(base);
> >
> >   printf("value written is %d \n",value1);
> >
> > }
>
> It won't quite work as the IO address is different. Also inb/outb are
> mapped to __raw_readb/__raw_writeb.
>
> See these files:
>
> include/asm-arm/io.h
> include/asm-arm/arch-omap/io.h
>
> Tony
>

Re: omap 5912 serial driver

[Tony Lindgren]

* vikas gupta <vikas.iet@gmail.com> [060115 19:41]:
>    So can you suggest me how i can test my serial driver
>    i need to check the functionality of inb/outb
>    Can any one provide some pointer on it

How about run minicom on your board?

Tony